Cisco Cisco ONS 15454 M12 Multiservice Transport Platform (MSTP) Notas de publicación
2
Release Notes for Cisco ONS 15454 Release 4.7
OL-5944-01
Changes to the Release Notes
Changes to the Release Notes
This section documents supplemental changes that have been added to the Release Notes for Cisco ONS
15454 Release 4.7 since the production of the Cisco ONS 15454 System Software CD for Release 4.7.
15454 Release 4.7 since the production of the Cisco ONS 15454 System Software CD for Release 4.7.
No changes have been added to the release notes for Release 4.7.
Caveats
Review the notes listed below before deploying the ONS 15454. Caveats with DDTS tracking numbers
are known system limitations that are scheduled to be addressed in a subsequent release. Caveats without
DDTS tracking numbers are provided to point out procedural or situational considerations when
deploying the product.
are known system limitations that are scheduled to be addressed in a subsequent release. Caveats without
DDTS tracking numbers are provided to point out procedural or situational considerations when
deploying the product.
Hardware
DDTS # CSCed18803
Rarely, the Muxponder unit does not pass Jitter Tolerance test from Trunk port to client port as per ITU-T
G.825, 2 Mb/s mask, at the 10 Hz specific setpoint. The Muxponder should be configured with G.709
Off, FEC Off and Trunk signal provided by external Jitter test box, and the unit client port output
monitored for errors, to see this issue. This issue will be resolved in a future release. Note, however, that
in normal network configurations the muxponder is operated with G.709 and FEC turned on, and the
jitter tolerance tests pass.
G.825, 2 Mb/s mask, at the 10 Hz specific setpoint. The Muxponder should be configured with G.709
Off, FEC Off and Trunk signal provided by external Jitter test box, and the unit client port output
monitored for errors, to see this issue. This issue will be resolved in a future release. Note, however, that
in normal network configurations the muxponder is operated with G.709 and FEC turned on, and the
jitter tolerance tests pass.
DDTS # CSCuk48503
Under specific conditions the MXPD does not pass the Telcordia GR-253/G.825 Jitter generation mask
test on 10G TX Trunk port. The 2.5 G TX Client jitter generation is always within mask and does not
exhibit this issue. This occurs only when, in SONET mode, there is no FEC, no G.709, and client
interfaces are looped back, with non-synchronous clocking, and the jitter testbox TX connected to Trunk
RX port, while the jitter testbox RX is connected to the Trunk TX port. The jitter testbox TX clock
recovers from RX with an additional 5 ppm offset added. This issue will be resolved in a future release.
test on 10G TX Trunk port. The 2.5 G TX Client jitter generation is always within mask and does not
exhibit this issue. This occurs only when, in SONET mode, there is no FEC, no G.709, and client
interfaces are looped back, with non-synchronous clocking, and the jitter testbox TX connected to Trunk
RX port, while the jitter testbox RX is connected to the Trunk TX port. The jitter testbox TX clock
recovers from RX with an additional 5 ppm offset added. This issue will be resolved in a future release.
DDTS # CSCuk44284
An optical connector and optical attenuators inserted into the SFP may force the fiber against the shelf
door when it is closed. Use the following types of optical connectors and optical attenuators when
connecting to the SFP:
door when it is closed. Use the following types of optical connectors and optical attenuators when
connecting to the SFP:
•
Optical connectors: The length of the connector (starting from the ferule tip) plus the fiber boot
must be 50 mm or shorter.
must be 50 mm or shorter.
•
Optical Attenuators: The following attenuator Cisco P/Ns are recommended:
–
39-0228-XX
–
39-0229-XX
–
39-0230-XX